Electrode-holder cut-out for welding tools



June 22 ,1926. 1,589,977

A. LUCAS Lsc'rRoDE HOLDER CUT-OUT Fon WELDING Toons Filed Oct. l5, 1923 Y Y MMM lATTORNEYS Pane-.1 im., 22,1226. t i 1,589,977

UNITED sTATEs PATENT OFFICE.

ANDREW LUCAS, 0F LOB ANGELES, CALIFORNIA.

ELECTBODE-HOLDER CUT-OUT FOB WELDING TOOLS.

Application led October 15, 1828. Serial No. 868,860.

This invention relates to electrode holder Figure 4 is a View similar to Figure 3, cut-outs for Welding tools particularly such the electrical path being closed; and, welding tools as are em loyed for welding Figure 5 is a detail transverse sectional 65 rail joints of electric rai ways; and has for. View, partly broken away, taken' upon the 5 its particular object the provision of means line 5-5 of Figure 2.

whereby the electrical path through the Figures 2, 3, 4 and 5 are upon an enlarged holder may be established or terminated at scale. will, preferably b cut-out mechanism in- Corresponding parts in all the figures are 60 stalled in the han le portion of the holder. designated by the same reference characters.

l0 Other` objects consist in the provision of Referring with particularly to the drawimproved cut-out means and -electrode ing, I have shown at A the tubular handle holder with such cut-out means, in combinportion of an electrode holder within which ation, which will be superior in point of reis movably mounted a reciprocating circ-uit 65 lative simplicity and inexpensiveness, taken member B normally urged toward the forl in conjunction with positiveness, convenward end of the handle member by a surience and efliciency in. use and service and rounding coil spring b bearing against an general superiority. f a annular' iiange 6 on such member B and With the above and other objects in vlew, against an annular plug 7 at one end of the 'Il the invention consists in the novel and usehandle portion. Connected with such cir- '20 ful provision, formation, construction, comcuit member is an insulated electrical conbination, association and relative arrangeductor C. The forward end of such memment of parts, members and features, all as ber B is bifurcated and between the turcahereinafter described shown in the drawing tions 8 is mounted an insulating roller 9, 'I5 and inall pointed out in claims. the same being mounted upon a transverse 2tl It may ge Stated that a particular advanpin 1Q spanning the space between such tage in the use of the device resides in the furcations 8. Another circuit member D is fact that it aids in protecting the eyes of the fixed in the forward end of the handle memoperator of the welding tool, in that the ber A, as by a screw 11, and the same is rose electrical path may be broken or opened and vided with furcations 13 between which is so maintained S0 while handling the tool or 4mounted an lnsulating cam 11, the latter bebringing it into position for service, and uning mounted upon a similar pin 12 spanning til the operators eyes have been thoroughly the space between such furcations 13'.

shielded; whereupon the electrical path may Electrically connected with and preferably as be closed or established and the welding Integral with the member D and ranging operation proceeded with. In the use of orforwardly thereof, is an electrode holder dinary devices of this character frequently member F with which is pivotally connected an arc is inadvertently drawn, and such are, as at 111 a further electrode holder member with the heavy voltage em loyed, often seri- Gr, between which an electrode 'H is adapted 90 ously damages the eyes o operators. to be gripped under compression of a coi'l m In the drawing: spring 15 disposed between such members F Figure 1 is a side elevation of an elecand G adjacent to the forward end of the trodeholder and cut-out for welding tools, handle member A. K 'designates operating the conductor to theY holder being shown means for lthe insulating cam 11 and to' rela- 95 inl fragment; tively move the circuit members B and D,

45 Figure 2 is a longitudinal vertical secthe same comprising a inger-piece 16 havtional view thereof, particularly -in plan, ing a bifurcated shank or stem 17 straddling and taken upon the lines 2 2, Figure 1, and the forward portion of the insulating cam looking in the direction of the appended ar- 11 and loosely pinned thereto as at 18, and 100 rows#A having a lateral recess or notch 19 in its w Figure 3 is a frav menta'ry view similar forward side, adapted to receive a`- locking to Figure 1, with a rther sectional showhead 20 fast upon a stem 21 of a button or ing, the electrical path being open; linger-piece 22 urged outwardly by a comression coil spring 23, such spring being iioused in a chamber 241: at the lower portion of the circuit member D and conlined within the handle member A, one end of such s ring being received within the chamber in t e locking head 20, which locking head is ada ted to play with its stem vertically of the andle portion in a bore'25 in the circuitl -member D, such bor'e having a countersunk an elongated s ot 27 in the tubular handle member A, so that the stein 17 can swing upon the pin 18; and the bores 26 and 25 communicate. When the button .16 is in outwardly projecting position, as shown in Figure 4, such pin 21 is in its inward position, with its finger-piece 22; but, when the fingeriecev 16 is so inclined to swing the insulating cam 11 from the position shown in Figure 4 to the position shown in Figure 3, to operate upon the insulating roller 9, and move the circuit member B against the compression of the spring b, the notch 19 inally comes into position so that the head 20 can enter such notch, and it so does, the stern 21 being moved endwise by the/compression of the spring 23. It nowholds the shank or stem 17 in the position shown 1n Figure 3,l holding the circuit members 1B and D apart, with the electrical path through the electrode holder terminated or broken, so that the tool is safe to handle without the passage of electrical energy through the holder member F. lin order to release the circuit member B and permit Such member to be restored to the position shown in Figure 4 to again establish an electrical path through the circuit members B and D, the

button or linger-piece 22 is depressed, moving the locking head 20 out of the notch 19, whereupon the spring b forces the circuit member B forwardly, closing the electrical path through the members B and D and moving the stem 17 and its finger 16 outwardly into the position shown in Figure ll; and when the button 22 is again released the head 20 will come up under the shank 17 again into the position shown in Figure 4:. Subsequent pressure upon the button 16 will cause a subsequent locking of the circuit members with the electrical path open, as shown in Figures 2 and 3, in the manner described, and further subsequent pressure upon the linger-piece 22 will again release the button 16 and the connected parts so that the electrical path will be closed again, the locking head 20-taking up its position beneath the shank 17, as shown in Figure 4.

recae?? lin these actions the insulating cam 1l rides over and rotates the insulating roller 9, resulting, in conjunction with the action of the spring b, in reciprocation of the movable circuit member B. It will be notul that the entire cut-out mechanism is mountedv at the zone of the handle member A, which is grasped by the hand ot the operator manipulating thev welding tool, and that by shifting his thumbthe operator may :11- ternately manipulate the button or fingerpieces 16 and 22 to control the energization or de-energization of the tool, and may thus prepare the conditions relative to protection of his eyes and with respect to rendering the welding tool operative or inoperative, or in substituting fresh electrodes, as is desired or may be required. l

lt is obvious that various changes and variations and modifications may be made in practicing the invention, in departure from the foregoing description and the disclosure of the drawing, without departing from the true spirit of the invention.

Having thus'disclosed m invention, l claim and desire to secure by e ters Patent:

1. A. device of thev character disclosed, comprising a circuit member through which electrical energy may be applied to work, a handle member for such circuit member,

land means associated with thehandle member for passing electrical energy to such circuit member; means'likewise being associated with the handle member. controlling such passage of such electrical energy; said means including a furthercircuit member movably mounted in connection with such handle member, means formoving-such further circuit member, and means for releasably locking such last named means in operative position. v

2. A. device of the character disclosed, 4'comprising a circuit member through which electrical energy may be applied to work, a handle member for such circuit member, and means associated with the handle meniber for passing electrical energy to such circuit member; means likewise being associated with the handle member controlling such passage of such electrical energy; said last named means including a further circuit member movably associated with the handle member, a push button for operating such further circuitmember in one direction, and locking means for'releasably holding such push button in one direction.

3. A device of the character disclosed, comprising a circuit member through which electrical energy may be applied to work, a handlemember for such circuit member, and means associated with the handle member for passing electrical energy to such circuit member; means likewise being associated with the handle member controlling such passage of such electrical energy; said lll() last named means including a further circircuit member into circuit closing cuit member movably associated with the lhandle member, a push button for operatin such circuit member in one direction, an lockingmeans for releasably holding such push button in one direction; means being provided yieldingly urging said last named position. 4.-. A device of the character disclosed, comprising a circuit member through which electrical ener y may be applied to work, a handle member for such circuit member, and means associated with thehf-:ndle member for passing electrical energy to such circuit member; means likewise being associated with the handle member controllingsuch passage of such electrical energy; said `last named means including a further circuit member movably associated with the handle member, a push button for operating such further circuit memberin one direction, and locking means for releasablyl holding such push button in one direction; means being. provided yieldingly urging said last named circuit member into circuit closing position; said locking means comprising a further push button cooperating with said rst .named push button.

5 A device of the character disclosed, comprising a circuit member through which electrical energy may be applied to work, a handle member for such clrcuit member, and means associated with the handle member for passing electrical energy to such circuit member; means likewise being associated with the handle member controlling such passage or such electrical energy; said last named means including a further circuit member movably associated with the handle member, a push button for operating such further circuit member in one direction, and locking means for releasably holding such push button in one direction; means being provided yieldingly urging said last named circuit member into circuit closing position; said locking means comprising a :further push button cooperating with said first named push button;'/means being provided'yicldingly urgin said second named push button toward loc ing position.

6. A device of the character disclosed, comprising a circuit member through which electrical energy may be applied to work, a handle member for such circuit member, and means associated with the handle member for passing electrical energy to such circuit member; means likewise being associated with the handle member controlling such passage of such electrical energy; said last named means including a further circuit member movably associated with the handle member, a push button for operating such further circuit member in one direction, and locking means for releasably holding such push button in one direction; there being an eccentric device'movably mounted in connection with said first named circuit member and cooperating with said second namedcircuit member Pand operatively connected 'further circuit member in one direction, and

locking means for releasably holding such push button in one direction; there Vbeing an eccentric device movably mounted in connection A with said first named circuit member and cooperating with said second named circuit member and operatively connected with said push button; said second named circuit member having a roller meme ber with which said cam cooperates.

8., A device of the character disclosed, comprising a circuit member through which electrical energy may be applied to work, a handle member for such circuit member, and means associated with the handle member for passing electrical energy to such circuit member; meansv likewise being associated with the handle member controlling such passage of such electrical energy; said last named means including a further circuit member movably associated with the handle member, a push button for operating such further circuit member in one direction, and locking means for releasably holding such push button in one direction; there being an eccentric device movably mounted in connection with said irst named circuit member and cooperating with said second named circuit member and operatively con er for such circuit member,

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nected with said push button; said second named circuitvmember having a roller member with which said eccentric member cooperates; said eccentric member and said roller member'being of insulating material.

9. A device of the character disclosed, comprising a. circuit member through which electrical energy may be applied to work, a handle member for such circuit member, and means associated with the handle member for passing electrical energy to such circuit member; means likewise being associated with the handle member controlling such passage of such electrical energy; said last named means including a further circuit member movably associated with the handle member, a push button for operating such further circuit member in one direction, and

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push button in one direction; means being provided yieldingly urging' said last named circuit member into circuit closing position; said locking means comprising a further push button cooperating with said irst named push button; said first named push button having; a recess adapted to be entered by a locking head upon said second named push button.1\

10. ln a device of the character disclosed, two relatively movable circuit members, means normally urging the same into contact, cam means for relatively se arating said members, and means for re easably locking. said cam means to maintain separation of the relatively movable circuit members.

1l. In a device of the character disclosed, two relatively movablev circuit members, means normally urging the same into contact, cam means for relatively separating said members, and means for releasably locking said cam means to maintain separaweee?? tion of the relatively movable circuit members, said cam means being provided with an operating push button, and said locking means comprising a further push button cooperating with said iirst named push button. i

12. lln a device of the character disclosed, tvvo relatively movable circuit members, means normally urging the same. into contact, cam means for relatively separatingN said members, and means tor releasably locking said cam means to maintain separa'- ti-on of the relatively movable circuit members, said cam means being provided with an operating push button, and said locking means comprising a further push button adapted tointerlock with said first named` push button in one position; means likewise being provided urging said second named push button into locking position.

. ln testimony whereof, ll have signed my name to this specification.

armenia Lucas., 

